I am using a drum machine through the mixer, no problems, then I run a mp3 player and I get a popping noise and everything cuts out. I leave it for a while and it works again but not for long. Seems like an overload problem but but I can't think how it's being overloaded
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You do not specify what model you have.
It could be related to the power supply shutting down (e.g. from overheating) then restarting after cooling down.
If the mixer has a fan, you could check if it is uncovered, clean and running.
Chances are there is nothing wrong with the mixer. IF you accidentally turned on Phantom power, that would cause the problem. Phantom is ONLY used with condenser mics and a few DI boxes. Turning it on can create noise unless balanced lines are used everywhere.
If more than one input is bad, then problem has NOTHING to do with the preamps. Check list:
1. Make sure you are using BALANCED lines everywhere... either XLR or TRS cables.
2. Make sure ALL interconnected equipment, mixers, amps, powered speakers, CD players, etc. are ALL powered from the SAME receptacle or power distribution unit.
3. Do proper setup. Select each channel PFL and set the trims so the indicator never goes into clipping, but is in the 70% range during max volume input to mics, etc..
4. During operation the sliders should be at least 50% up on used channels and the mains. Setting of levels throughout the system is important for noise free operation. Using EXCESS gain at some point results in distortion and noise. Using sliders near the bottom position results in poor signal to noise ratio.
Now re-read #2 above... and believe it. I have seen a lot of equipment blown due to ground bounce of building power. That is why the pro's run power back to their mixer from the area where the amps are powered.
You MAY be overdriving the sound card. Near flat should work for vocal, but setting the levels throughout the mixer is important as well as the sound card. You can use the LOW CUT to reduce hum if you have noisy system. Describing balancing the levels is more than I can do here. There are many good videos about mixer setup on YouTube.com. You cannot "fix" problems created by improper levels and noise injected into the system using the EQ.
What is important is to see that all gain controls and faders are around mid range to 70% when operating normally. You should be using BALANCED lines everywhere possible either XLR or TRS cables. ALL interconnected equipment should be powered from the same receptacle or power source INCLUDING all amps and powered speakers. Often users use unbalanced lines from mixers to sound boards and pick up noise or they have the levels set wrong between the mixer and sound board resulting in clipping and distortion or poor signal-to-noise ratio.
okaye, i justt figured itt outt, hopefully you gett an email aboutt this postt...
so anywayz yo,
how many instruments you have hooked up to your mixer? thats the key, #1.
make sure you have atleast ATLEAST 2 mixers in your start up program, once you use the max output input for your original mixer, the next instrument patch you load will not be routed, (no more space), you'll have to route it manually (press Tab) *get familar with routing your own devices, for reverb/chorus and such,
this applies to everything about recieving sound from your project/keyboard. and just route your extra devices on the new mixer --they go up to 14 channels, i have like 22!
so thats my solution, hope itt applies.
South Caro-line-em- up
You can cut the treble gain some BUT most importantly is to send adequate signal to this speaker so volume level does not have to be set high when sending LINE LEVEL signals to it. Hissing noise is a product of the statistical noise that occurs in electronics. Running any device at high gain invariably brings up the hiss level. Managing thee signal levels is the responsibility of the sound engineer.
ALSO feed ALL interconnected equipment from the same receptacle or power source, even if it means running a power cable to a mixer alongside the snake. ALWAYS USE BALANCED audio cables whenever possible.
Try cleaning al of the sliders using an electronics cleaning spray. Choose one that contains a lubricant as well. Dirty sliders can cause this especially at low volume levels. If that does not cure the problem, there may be a defective IC inside the unit. Many mixers use opamp ICs as buffers and final stage amplifiers. These are inexpensive and can fail in that manner. Without knowing the specific make and model ogf your unit, I can't give you any details. Please post the make and model and I'll try to provide additional possibilities.